Submitted on: 25 September 2015.
Revised on: 22 January 2016.
Accepted on: 13 February 2016.
___________________APPLIED CLAY SCIENCE---ELSEVIER
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Submitted on: 28 November 2012.
Revised on: 21 March 2013.
Accepted on: 06 May 2013.
___________________APPLIED CLAY SCIENCE---ELSEVIER
Submitted on: 07 December 2009.
Revised on: 11 March 2010.
Accepted on: 04 April 2010.
___________________APPLIED CLAY SCIENCE---ELSEVIER
Submitted on: 22 June 2001.
Revised on: 25 September 2001.
Accepted on: 22 November 2001.
___________________APPLIED CLAY SCIENCE---ELSEVIER
Submitted on: 28 April 2015.
Revised on: 23 May 2015.
Accepted on: 14 June 2015.
___________________APPLIED CLAY SCIENCE---ELSEVIER